The National Football League has formally thrown its weight behind New Jersey state officials in their high-stakes legal battle seeking Supreme Court intervention over sports betting on prediction market platforms.
In an amicus brief filed with the United States Supreme Court, the professional football league urged the justices to grant a petition for a writ of certiorari filed by New Jersey Attorney General Jennifer Davenport and gaming enforcement interim director Mary Jo Flaherty. The legal confrontation stems from New Jersey’s ongoing efforts to challenge prediction market platform Kalshi, a dispute that could ultimately decide whether the oversight of financial event contracts governing sports outcomes falls under the jurisdiction of individual state gaming authorities or federal financial regulators.
The football league’s filing aligns closely with several key arguments advanced by New Jersey authorities. Among them is the pressing need to address the classification of sporting-event contracts on prediction markets as financial "swaps," a designation the league argues must be reviewed to preserve the fundamental integrity of sports and protect consumers from financial harm. Highlighting the massive financial scale of these markets, the NFL cited internal data demonstrating that on the very first Sunday of the regular football season, prediction-market trading volume reached $3.3 billion, with more than half—approximately $1.8 billion—directly tied to NFL games.
According to the league, many of the event contracts offered by Kalshi and similar platforms are highly susceptible to manipulation or are otherwise inherently objectionable. The amicus brief warned that these types of wagers pose severe threats to competitive fairness because the underlying events can be influenced by a single individual, particularly if insider knowledge or advance notice is involved. The league noted that a player could theoretically alter their on-field performance, a coach could intentionally modify a team’s lineup, or an official could intentionally make or withhold specific game-changing calls to sway a contract’s financial settlement.
Another central issue raised by the NFL is what it described as a glaring lack of sensible safeguards for event contracts overseen by the Commodity Futures Trading Commission. The league argued that federalizing the regulation of sports betting by default, rather than respecting individual state regulatory frameworks and consumer protection laws, raises a major question of national significance that the Supreme Court must address.
As the legal proceedings continue, the Supreme Court has not yet announced whether it will formally accept the case for review. Meanwhile, Kalshi has been granted a legal extension to respond to New Jersey’s initial filing, giving the prediction market company until November 9 to address complex questions concerning state versus federal jurisdiction, the manipulability of event contracts, and consumer protection mandates.
States Want Clarification From SCOTUS on Prediction Markets
The NFL is far from alone in its push for judicial clarity. A broad coalition representing 39 US states and the District of Columbia filed a separate amicus brief supporting New Jersey’s petition. This multi-state filing argued that the intensifying jurisdictional conflict between the CFTC and state gaming authorities has erupted into a sprawling national turf war that cannot be satisfactorily resolved without definitive guidance from the nation’s highest court.
The state-level brief cautioned that delaying a definitive ruling will only allow the federal-state regulatory dispute to escalate further. The ongoing power struggle between state regulators and the federal commodity agency underscores profound unpredictability regarding which laws apply and to whom. The coalition asserted that whether in the current litigation or through subsequent legal challenges bound to reach the judiciary, the Supreme Court must step in to resolve the existing circuit split, provide clear guidance to lower courts, define the true scope of the CFTC’s statutory authority, and answer the critical legal questions at the heart of the dispute.
The regulatory friction has drawn sharp responses from industry participants caught in the middle of the dual-system compliance maze. Kalshi spokesperson Dani Lever previously emphasized the operational impossibility for companies in the sector to be effectively regulated by 50 different state authorities alongside federal oversight bodies.
Whether the Supreme Court justices ultimately decide to hear the case remains uncertain. While New Jersey officials were the first to formally petition the high court to review the Kalshi dispute, a growing number of parallel state-level enforcement actions and regulatory investigations involving prediction market companies continue to unfold across the country, ensuring that the broader legal battle over sports-related event contracts will remain a focal point of American gaming and financial law for the foreseeable future.
